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Additional Morphological Features Useful in Species Identification Measurements of length from the tip of the rostral spine to the tip of the dorsal spine (rostral-dorsal length = RDL) of Stage I and II zoeae from the southeastern Bering Sea with longer lateral processes [hereafter referred to as knobs, after Kurata (1963)] were always in the range of RDL values given by Motoh (1973, 1976) and Kurata (1963, 1969) for C. opilio from Japan (Table 1). That is, specimens diagnosed as C. opilio according to Haynes' (1981) lateral process (knob) criterion always had RDL measurements greater than or equal to 4.5 mm. Haynes (1973, 1981) did not specify a difference in RDL measurements between the two species. Those Chionoecetes zoeae collected from the southeast Bering Sea which had shorter knobs had RDLs in the range given by Haynes (1973, 1981) for C. bairdi, i.e. less than 4.6 mm for Stage I and less than 6.4 mm for Stage II. In addition, we also found that Stage II zoeae with shorter knobs had shorter RDLs than those reported by Haynes (Table 1). Measurements of these RDLs ranged from 5.5-5.95 mm. We thus found a consistent relationship of RDL to knob length in specimens for both groups of zoeae: those with obviously short and those with obviously long knobs (lateral processes). The zoeae from the southeast Bering Sea that constitute these two categories also differed from each other in the shape and length of their carapace lateral spines (CLS). The CLS of zoeae with long knobs appeared straight, while the CLS of zoeae with short knobs appeared to droop downward (ventrally). As a general rule, the straighter CLS were shorter relative to the zoea's RDL, whereas the drooping CLS were longer relative to the RDL. These characteristics in addition to the one proposed by Haynes (1981) were used in our study to distinguish between zoeae of Chionoecetes spp. and are summarized in Table 2. When these characteristics were used, most zoeae of Chionoecetes spp. from shelf waters of the southeastern Bering Sea could be tentatively identified as C. bairdi and C. opilio. This included the numerous specimens in which the knob length relationship did not provide conclusive evidence for species identification. Our identifications were then "tested" against data from plankton studies and information on the distribution and relative abundance of adults of the two species. 874
Table 1. Rostral-dorsal lengths of Chionoecetes bairdi and C. opilio Stage I and II zoeae tabulated from the current literature. Table 2. Summary of diagnostic features used to identify Stage I and II zoeae of C. bairdi and C. opilio collected in plankton samples from the southeast Bering Sea: Knob (curved lateral process), RDL (rostral - dorsal length) and CLS (carapace lateral spines) (see text for details). 875
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Outer Continental Shelf Environment
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OUTER CONTINENTAL SHELF ENVIRONMENT
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Outer Continental Shelf Environment
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TABLE OF CONTENTS List of Figures 5
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LIST OF FIGURES Figure 2.1. BIOS si
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LIST OF TABLES Table 2.1. Table 3.1
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SUMMARY Infaunal bivalve molluscs f
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FINAL REPORT on BAFFIN ISLAND EXPER
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they have little or no ability to m
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2. HYDROCARBON BIOACCUMULATION 2.1
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Table 2.1. Summary of oil concentra
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some of the oil during the period b
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Figure 2.3. Variation of aromatic h
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Figure 2.5. Mya truncata-GC 2 profi
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Figure 2.7. Aromatic profiles from
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Figure 2.9. Mya truncata aromatic p
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Figure 2.11. Mya truncata-GC 2 prof
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Figure 2.13. Concentrations of oil
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Figure 2.15. Mya truncata-Bay 11 (a
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Figure 2.17. Variation of aromatic
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Figure 2.19. Serripes groenlandicus
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Figure 2.23. Aromatic hydrocarbon p
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Figure 2.30. Astarte aromatic profi
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Figure 2.34. Aromatic hydrocarbon G
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Astarte, Bay 9, 1-day post-spill, 7
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increase in water-borne oil concent
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decision based on GC 2 . Oil levels
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profiles of tissue extracts of the
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A similar differential behavior of
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Table 3.1. Dates of collection and
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Fixed specimens from the 1981 colle
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Table 3.4. Summary of histopatholog
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Table 3.6. Summary of histopatholog
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Figure 3.1. Granulocytoma in testis
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Figure 3.5. Excessively vacuolated
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4. BIOCHEMICAL EFFECTS OF OIL The o
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Table 4.1. Carbohydrates and lipids
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Table 4.2. Concentrations of petrol
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Table 4.4. Mean concentrations of f
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In clams collected immediately befo
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Table 4.7. A summary of associated
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parameters measured. Clams from the
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alone was more gradual and reached
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interfered with feeding, gonadal de
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Brown, R.S., C.W. Brown, and S.B. S
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Malins, D.C. 1982. Alterations in t
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APPENDIX I: PANH COMPOUNDS IN OIL 1
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SPECTRUM DISPLAY/EDIT **
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** SPECTRUM DISPLAY/EDIT **
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** SPECTRUM DISPLAY/EDIT
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FILE NUMBER 12421
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XX SPECTRUM DISPLAV/EDIT **
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** SPECTRUM DISPLAVY/EDIT **
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APPENDIX III: ASTARTE BOREALIS: BAY
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** SPECTRUM DISPLAY/EDIT**
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** SPECTRUM DISPLAY/EDIT **X
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APPENDIX V: SERRIPES GROENLANDICUS:
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FEEDING ECOLOGY OF JUVENILE KING AN
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DIETARY COMPOSITION ...............
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Figure 13a. Loss of precipitin reac
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Table 10. Dietary composition of ju
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ABSTRACT To determine the food requ
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FEEDING ECOLOGY OF JUVENILE KING AN
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Figure 1.--Station locations during
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Figure 3. Station locations during
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efore freezing. From large catches
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percentage of the maximum stomach v
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The amount evacuated is given by th
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examined entered the dry weight ana
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Battelle's Pacific Northwest Divisi
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tows and trawling as techniques for
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Stomach fullness plotted against ti
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Figure 4. Decay curve for the clear
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life of the compartment. Similarly,
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Figure 6. Exponential decay curve f
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Figure 8. Exponential decay curve f
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A comparison of the equations in Ta
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hard parts with the palps and then
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Figure 10. Standardized dry weight
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Table 5. Diel feeding chronology fr
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These results are comparable to tho
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Figure 12. The frequency of newly d
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Table 7. Continued
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Table 9. Dietary composition (% fre
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Table 11. Dietary composition of ju
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Table 12. Dietary composition (% fr
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Table 14. Soft tissue to hard tissu
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Table 16. Dietary composition (% of
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polychaetes in both June and August
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Table 18. Continued 221
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and, therefore, had a caloric value
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Table 21. Caloric intake from vario
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Table 27. Results of visual examina
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They were then fed thawed juvenile
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eing tested rather than to cross re
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against its respective antigen and
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Table 29. Results of visual examina
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DISCUSSION IMMUNOASSAY The immunolo
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juvenile king crabs may depend on c
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Table 32. Comparison of August diet
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stomach contents but soft-bodied po
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The assumption that, at least for t
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shows high similiarity between the
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supply requires prediction of the s
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have been shown to readily and rapi
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Using the diel feeding chronologies
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to 70 m, potential effects from dis
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REFERENCES Addy, J. M., D. Levell,
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Hill, B. J. 1976. Natural food, for
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Tyler, A. V, 1973. Caloric values o
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CLARIFICATION All references to "se
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4.0 DISCUSSION ....................
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Figure 3.2-2 Cruise 83-3 larval red
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ACKNOWLEDGEMENTS This study was ori
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ABSTRACT The goal of this study was
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SECTION 1.0 INTRODUCTION The red ki
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1.1 Study Objectives The goal of th
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than 50 m. The oceanography of the
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entering the fishery have declined
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females. This relationship supports
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time to temperature. Time from egg-
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Juvenile crab in 2+ to 3+ age class
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BRISTOL BAY RED KING CRAB CRUISE 83
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BRISTOL BAY RED KING CRAB STATION I
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2.1.2 Field Gear and Sampling Metho
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consisted of 24 hours on all cruise
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were recorded for subsamples of lar
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200 individuals of the most common
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BRISTOL BAY RED KING CRAB STUDY ARE
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Epibenthic density and biomass data
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little vertical temperature stratif
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TABLE 3.1-1 (continued) 328
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BRISTOL BAY RED KING CRAB PERCENT G
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etween Unimak Island and Port Molle
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BRISTOL BAY RED KING CRAB SIDE-SCAN
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TABLE 3.2-1 MEAN LARVAL RED KING CR
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stations in this area where larval
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three-day period in June showed rat
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BRISTOL BAY RED KING CRAB DIEL VERT
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TABLE 3.3-1 GEOMETRIC MEAN DENSITIE
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during the June cruise (83-3). duri
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TABLE 3.4-2 NUMBER OF POST LARVAL R
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TABLE 3.4-3 NUMBER OF POST LARVAL R
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BRISTOL BAY RED KING CRAB TRYNET SA
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BRISTOL BAY RED KING CRAB TRYNET AN
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BRISTOL BAY RED KING CRAB DISTRIBUT
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NORTH ALEUTIAN BASIN RED KING CRAB
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TABLE 3.5-3 CORRELATION MATRIX FOR
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TABLE 3.5-5 CORRELATION MATRIX FOR
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at one 50 m deep TB station west of
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TABLE 3.6-2 SUMMARY OF BIOLOGICAL I
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TABLE 3.7-1 SUMMARY OF TRYNET CATCH
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group AB, especially the fish speci
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BRISTOL BAY RED KING CRAB LARVAL DE
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BRISTOL BAY RED KING CRAB LARVAL DE
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BRISTOL BAY RED KING CRAB KNOWN CIR
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Bay and west to Cape Newenham. The
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BRISTOL BAY RED KING CRAB 1978, 197
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protection against predators, as we
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which provides for adequate food (i
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4.5 Potential Effects of Oil and Ga
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to a great extent tidally driven, t
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(1983b), the same volume of oil is
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BRISTOL BAY RED KING CRAB SURFACE O
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Overt, rapid mortality of adult cra
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viability of the gametes is impaire
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detected by chemosensory organs. Pe
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and Alaskan species of shrimp and c
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interannual variability in abundanc
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that are killed by oil north of Uni
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Long-term, sublethal effects may al
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Botsford, L. and D. Wickham. 1978.
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Harris, R.P., V. Bergudugo, E.D.S.
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Kurata, H. 1961. Studies on the lar
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Paul, A.J., J. Paul, P. Shoemaker a
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Takeuchi, I. 1962, trans. 1967. On
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APPENDIX A MEAN LARVAL RED KING CRA
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APPENDIX B TRAWL GEAR TYPES USED BY
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APPENDIX C: TRAWL/DREDGE NOTES 435
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APPENDIX C (continued) 438
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APPENDIX D GUT CONTENT ANALYSIS FIE
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APPENDIX D (continued) 457
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APPENDIX E: MULTIPLE LINEAR REGRESS
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APPENDIX E (continued) 462
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APPENDIX F: JUVENILE RED KING CRAB
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APPENDIX F (continued) Figure Fl. S
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DISTRIBUTION AND ABUNDANCE OF DECAP
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4.0 DISTRIBUTION AND ABUNDANCE OF T
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8.3 Larval Decapod Biology, Sensiti
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Figure 3.4 Figure 3.5 Figure 3.6 Fi
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Figure 5.8 Distribution and abundan
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Figure 6.29 Distribution and abunda
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Table 4.5 Table 4.6 Table 5.1 Table
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ACKNOWLEDGMENTS We are indebted to
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1.0 GENERAL INTRODUCTION 1.1 Justif
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Larval stages are generally conside
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extent in 1982) did we have the opp
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The sections of this report describ
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Table 2.1. Dates and sources of zoo
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techniques which attempt to equally
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verification of results or examinat
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cation of these larvae and the vari
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meters) was often similar (generall
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Bongo frame, the MOCNESS frame cann
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abundance within strata were made b
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520
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522
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524
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526
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528
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Figure 2.21 Locations and boundarie
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Figure 3.1. Location of proposed le
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characterized as part of the subarc
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Fig. 3.4. Distribution of male red
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Figure 3.5. Abundance estimates of
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pheromone cues could impair males'
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on larvae hatched elsewhere, includ
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aggregations could influence suscep
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Fig. 3.7a. Distribution and relativ
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the benthic habitat associated with
Page 560 and 561:
conclusions of Slizkin (1973) who r
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A further observation germane to th
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Fig. 3.10. Major king crab catch ar
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3.4 Results 3.4.1 Distribution and
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11 and 12 (Figs. 3.11, 3.12). Too f
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Table 3.1. Number of zooplankton sa
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Because of the poor spatial coverag
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made them imperfect in areas (Fig.
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Table 3.2. A summary of larval red
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Fig. 3.15. Distribution and relativ
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Fig. 3.16. Interannual differences
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[An interesting note on annual abun
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Fig. 3.17a. Frequency of occurrence
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The occurrence of a multi-stage lar
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megalopae. These combinations of ye
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to early August (Fig. 3.17b), and s
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Fig. 3.21. Vertical distribution of
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consequences of oil exposure scenar
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abundance in time and space is corr
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Female crabs were abundant in strat
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observing that: 1) the mature femal
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Much research on king crab biology
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12) Determine interannual differenc
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around the traditional king crab fi
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Table 4.1. Historic U.S. Tanner cra
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(NMFS) since the early 1970's. In a
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Fig. 4.2b Centers of abundance of b
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4.3 Reproduction and Description of
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oth species for 80 mm specimens, bu
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from all stations were pooled for v
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Fig. 4.4. Timing of appearance of l
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Table 4.3. Timing of appearance of
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megalops larvae of both species and
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Table 4 . 5 .Proportion of Stage II
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Fig. 4.5. Temporal aspects of devel
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assumes a relatively homogeneous di
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Methods for analysis of depth distr
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Fig. 4.7. Vertical distribution of
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were found in the upper 40 m. Eight
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From the diel stations, 10% or more
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difficulties in quantitatively samp
Page 642 and 643:
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The distribution patterns for C. ba
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3. Most of the larval hatchout occu
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5.0 DISTRIBUTION AND ABUNDANCE OF O
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Table 5.2. Early life history infor
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tions are not available for them. D
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to as wide as 250 mm wide by a maxi
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alutaceus larvae were collected fro
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Table 5.3. Species list of non-Chio
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annually, which resulted in little
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Figure 5.1 Vertical distribution of
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examining their vertical larval dis
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also July of 1981. Within strata, b
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Figure 5.3 Seasonal occurrence of l
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Figure 5.5 Mean density and one sta
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Long-shelf density of Erimacrus lar
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Figure 5.6 Frequency-of-occurrence
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Figure 5.10 Distribution of mean de
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Figure 5.12 Distribution of mean de
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at 21% of all stations sampled and
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Table 5.7. Frequency of occurrence
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1980
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2) In May and June of all years com
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Figure 5.15 Locations and densities
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excess of 100,000/100 m² were foun
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Distribution and Abundance: Larvae
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Table 5.10. Stratum number Frequenc
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Figure 5.20. Mean density and one s
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Pandalus borealis - Haynes 1979 Pan
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Table 6.1. Comparison of life histo
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this age are non-reproducing or ste
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Bering Sea stocks during the early
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in the Bering Sea but Butler (1980)
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6.3 Hippolytidae The Hippolytidae a
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summer food for spotted seals. Fede
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21% of the 1976 tows (Feder 1978).
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Figure 6.1 Frequency of occurrence
Page 724 and 725:
Page 726 and 727:
A stage frequency histogram for P.
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Figure 6.4 Pandalus tridens stage f
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ottom. A pandalid larval type that
Page 732 and 733:
Pandalopsis dispar was taken only o
Page 734 and 735:
Page 736 and 737:
Page 738 and 739:
Figure 6.10 P. borealis larval abun
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outer shelf with the oceanic area b
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Since P. tridens occurred less freq
Page 744 and 745:
Page 746 and 747:
outer shelf during those years. Sam
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Figure 6.16 Vertical depth distribu
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Page 752 and 753:
SI zoeae were first taken in March
Page 754 and 755:
Page 756 and 757:
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Table 6.7. Cross-shelf comparison o
Page 760 and 761:
during PROBES 1980 and 1981 samplin
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4) Larvae were distributed homogene
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Figure 6.25 Crangon spp. stage freq
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Figure 6.26 Argis spp. distribution
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Page 770 and 771:
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Figure 6.31 Crangon spp. larval abu
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2) The intermolt period of about 2
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Figure 6.33, these deepwater shrimp
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Page 782 and 783:
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3) Larvae were in the water column
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7.0 DISTRIBUTION AND ABUNDANCE OF H
Page 789 and 790:
Table 7.2. Reproductive data for fo
Page 791 and 792:
and 1976 (between the Pribilof Isla
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Figure 7.1 Paguridae stage frequenc
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Page 799 and 800:
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Figure 7.6 Mean larval densities of
Page 803 and 804:
Figure 7.8 Vertical depth distribut
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3) Larval duration in the plankton
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and oil transport developed for the
Page 810 and 811:
Figure 8.1 Current directions and n
Page 812 and 813:
discussed by participants at the St
Page 814 and 815:
Larval Feeding: Studies with other
Page 816 and 817:
and high resultant mortality. Sonnt
Page 818 and 819:
The third reproductive effect invol
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to and impact on, pelagic and benth
Page 822 and 823:
3. Oil was mixed to a 50-m depth in
Page 824 and 825:
synthesis as mutagenic/teratogenic
Page 826 and 827:
One or two very weak year-classes r
Page 828 and 829:
were covered by lower concentration
Page 830 and 831:
Figure 8.3 Surface oil trajectories
Page 832 and 833:
are to the west-southwest (Fig. 8.4
Page 834 and 835: Large volumes of oil reaching shall
Page 836 and 837: of time in the neuston layer. If th
Page 838 and 839: in this area and so deleterious eff
Page 840 and 841: 4. Exposure of developing eggs and
Page 843 and 844: LITERATURE CITED Adams, A. E. 1979.
Page 845 and 846: Butler, T. H. 1971. A review of the
Page 847 and 848: Feder, H. M. and S. C. Jewett. 1980
Page 849 and 850: Haynes, E. B. 1980a. Larval morphol
Page 851 and 852: Ivanov, B. G. 1964. Results in the
Page 853 and 854: Kurata, H. 1960. Studies on the lar
Page 855 and 856: Douglas Wolfe, ed. Fate and Effects
Page 857 and 858: Motoh, H. 1976. The larval stages o
Page 859 and 860: king crab Paralithodes camtschatica
Page 861 and 862: Roncholt, L. L. 1963. Distribution
Page 863 and 864: Somerton, D. A. and R. A. Macintosh
Page 865 and 866: Wencker, D. L., L. S. Incze, and D.
Page 867: APPENDICES: A: S.E. Bering Sea Shri
Page 871 and 872: APPENDIX B. References used for ide
Page 873: APPENDIX C. Paguridae and Lithodida
Page 877: TABLE OF CONTENTS ABSTRACT .......
Page 880 and 881: zoeae of these two species from the
Page 882 and 883: the curved lateral processes reach
Page 886 and 887: APPLICATION OF FINDINGS TO FIELD ST
Page 888: Kurata, H. 1963. Larvae of Decapoda
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